Why Did Hamilton and Armstrong Conduct In-Depth Interviews on a Wide

Why did Hamilton and Armstrong conduct in-depth interviews on a wide range of topics with their participants?

A) They were conducted a number of studies on a single data set.
B) This approach allowed them to gather answers that the women would otherwise not share.
C) Their longitudinal, conversational, and holistic approach allowed them to consider areas of intersection.
D) They wanted to understand the difference between women with pixie cuts and women with longer hairstyles.